Using this transferproof lipstick protector is easy. First, put on your lipstick and wait until it's dry. This helps the protector work better. When squeezing out the protector, just take a little bit and spread it gently on your lips. As for maintenance, keep it in a cool and dry place. And be careful not to let it get too hot or it might affect its quality. Also, don't share it with others to avoid hygiene issues.